Tire pump



I. L. IIAvIEs.

TIRE PUMP.

APPLICATION FILED MAYI9. 192s.

1,417,805, Patenjed May 30, 1922.

3 SHEETS-SHEET l.

I f3 .y

I. L. DAVIES.

TIRE PUMP.

APPLICATloN FILED MAY19,1920.

Patented May 30, 1922.

3 SHEETS-SHEET 2.

l. L. DAVIES.

.URE PUMP.

APFLCATlON FILED MAYQ, 1920. 1,417,805. Patented May 30, 1922.

3 SHEETS-SHEET 3.

f'ar L/ewe/y/' Davies.

UNITED STATES PATENT OFFICE.

TIRE PUMP.

Specilcaton of Letters Patent.

Patented May 30, 1922.

Application led May 19, 1920. Serial No. 382,669.

To all 107mm z5 may concern:

Be it known that l, Iron `Lienwnmfr: Diivnis, of Blackheath, in the county of Kent, England, engineer', a subject ot' the King oi Great Britain and Ireland, have invented certain new and useful Improvements in and Relating to Tire Pumps, of which the tol.- lowing is a specification.

This invention relates to tire pumps, Vand the object is to provide a simple and highly ei'licientdevice capable of being produced as a unitary structure and permanently applied as a fixture to any mechanically pro polled road vehicle having pneumatic tires, the said device being capable ot operation by hand and either from within the body of the vehicle or from the outside thereof, or from the ground.

Broadly stated, the invention consists ot a pair or pairs of cylinders horizontally op posed to one another or arranged in tandem with a piston in each cylinder, a piston actuating member common to said cylinders and adapted for operation by hand and means :tor conveying compressed air from either side of each piston to a distributing chamber and thence to the tire.

The invention further comprises certain details ot' construction or arrangement ot parts hereinafter described and specifically pointed out in appended claims with reference to the accompanying drawings, in which Fig. 1 is a part side elevation, part vertical section ol the improved pump applied to the tootboard oi. a vehicle and with the cylinders opposed to one another.

Fig. 2 an end View from the lett ot Fig l with parts in section:

Fig. 3 is a part top plan view and part horizontal section with the tootboard broken away:

Fig. Il is a partial sectional detail view ot an operating handle hereinafter referred to:

Fig. 5 is a vertical section showing a modiiication in which the cylinders are arranged in tandem, and

Fig. 6 is an end view of Fig. 5 from the lett hand thereof.

To refer more particularly to the structure shown in Figs. 1 to 4; of the drawings, the preferred position for the pump is on the underside of one of the tootboards or running boards c ot the vehicle, suitable means tor attachment such as bolts'al being provided. rThe pump itself shown comprises two cylinders b b1 horizontally opposed to one another, these cylinders each having` within same a Vpiston c which may be pro` vided with cup `leathers c1 or other appie priate form oit packing and the rod d ot which is actuated through a connection shown as a connecting rod e by means oit a common lever conveniently positioned between adjacent ends ot the cylinders. The lever f is shown as fulcrumed on a pin f1 mounted within a hollow extension f2 oit' the crank casing f3 to which the cylinders are connected as by bolts f4.

lNhen actuated, the pistons c are caused to suck air through the anti-return valves f/ and compress said air alternately in the cylinders Z) 1, the air passing therefrom through other anti-return valves g1 disposed in each cylinder at opposite sides ot the piston to eiect double action. The compressed air passing said valves enters pipes 7L leading to a distributing chamber t' shown as provided with a pressure gauge 'il and from which chamber the air is conducted as from the outlet 'i2 by flexible tubing (not shown) to the tire. l

The chamber i is shown as attached to the crank casing by screws For the purpose of imparting movement to the lever f, the upper end of said lever is adapted to be engaged by a detachable handle shown as screw-threaded at f5 for engagement by the interiorly threaded socket ,7'1 at the end of a detachable handle j (Fig. This handle may be normallyY retained in clips or other holding means which may be attached to the underside ot the :tootboard or in other convenient or aocessible place preferably outside the body ot the vehicle but when required to operate the pump, the handle is removed from its holding means, a liap or pivoted portion ic of the footboard is raised disclosing the end of the lever f and pressure gauge l on the air distributing chamber z' and the handle j is applied to the lever and worked or reciprocated in a direction parallel to the motion ot the vehicle to produce the pumping action ot the pistons, this operation being readily performed, it desired, by a person within the body of the vehicle. The said flap Ze is shown as provided with an aperture 7:1 to receive the end of the lever fivliich is normally covered by means oi' a screw cap 7x2 secured on to the threaded end or' said lever.

To non7 refer to the modification shown in Figs. 5 and G, the cylinders b1 are here arvpiston by a rod d1, The remaining reference characters designate similar parts to those shown in Figs. l to 3.

.From the above description it will be apparentrthat I have provided a tire iniiating device capable of application to a vehicle as a self-contained unit and lcapable of ready actuation Without disturbing the occupants.

What I claim as my invention and desire to secure by Letters Patent of the United States is z i i l. A tire pump comprising cylinders `disposed horizontally `with their axes in align; ment, a piston in each of said cylinders, a piston actuating member common to said cylinders and pistons7 a detachable operating element adapted to be applied to said actuating member for manual operation thereof7 means for Aconveying compressed air iiiom'each cylinder from opposite sides of the piston therein and 'a distributing chamber for receiving suchy compressed air from the cylinders and having an outlet for said airto a` tire, incombination with a vehicle foot-board, a movable member in said footboard adapted to be displaced to.

permit application of the operating` element to the piston actuating member, and means for attaching the pump to said foot-board.

2. A tire pump comprising a plurality of cylinders, a piston in each cylinder, a piston actuating member common to the pistonsof all the cylinders7 a removable operating handle for operating the actuating inem'- ber,l and means for conveying the air compressed in said cylinders to a tire, in combination with a'vehicle foot board on the under side of which the cylinders are mounted, and a movable member in the foot board adapted to be displaced to permit of application of the operating handle to theactuating member to effect, operation oi the actuating member.

3.k An assembly of the character described embodying a vehicle running board provided with a doorya pump positioned on the under side of the runningboard adjacent the door and normally precluded from operation until the door is opened.

4t. An assembly'oit' the character described embodying a vehicle running board pro-.

vided with a door, a pump positioned Y ou the under side of the ruiming board adjacent thedoor, and means 'for normally maintain4 ing the door closed and for holding the `pump parts against movement, until the door is released and opened.

`5. An assembly ofthe character described embodying a vehicle running board7 provided With 'a door, ,a pump positioned on the under side of the running board adjacent the door and having an actuating member, and means associated with the actuating member tor maintaining the door closed to protect the pump when it is not in use.

In Witness whereof I have signed this specilication.

iron LLEWELYN Davies. 

